Upgrading Drupal

I'm updating my site from Drupal 6 to 7 and I would like some help finding some comparable modules to the ones listed below. Thanks for the help!

- Fivestar Extra 6.x-1.1
- Password Confirm Change 6.x-1.1
- Profile Permission 6.x-1.2
- Remove Log Messages 6.x-1.1
- Ubercart Restrict Qty 6.x-1.1

Since this is still manual, how do you go about upgrading a Drupal 7 site when a security or other update comes out?

Can you just overwrite all the files in the "WWW" directory and treat it as a new site or is this a slow and painstaking process?

Worried about all the added modules, having the site work after the upgrade, etc..

Thanks in advance.

- m

i am trying to install zend frame work in drupal 7 it shows as given below at the time of installing the dupal :

Zend Framework

7.x-3.0-alpha1

Ensures that the Zend Framework is installed.
This module requires PHP version 5.3.1 and is incompatible with PHP version 5.2.17.
may i know how can i work with zend frame work in drupal 7

I did a quick search and was unable to find this error and a way to fix it. I received this message after installing some modules and trying to activate them. If you all might have any suggestions that would be great! I did try to update to the new version of drupal but that just gave me a 500 error that was able to be corrected after a little bit of work.

trying to upgrade drupal 6 to 7. but when open site.com/update.php, error message as below
http://i.imgur.com/T3sGJ.jpg

below is the step that i use:
1) off-line
2) choose garland theme
3) disable non-core modules
4) remove default.settings.php
5) delete all folder and files excepts sites folder
6) copy all drupal 7 files to directory
7) setting.php permission set 666

I recently upgraded my site to the newest version of Drupal 7 (7.17) along with several modules. I also attempted to upgrade to the newest version of twitter_bootstrap (now bootstrap) but it proved to buggy and I had to revert to the older version.

The issue I am seeing involves the menu system. The menu system seems to rebuild itself over and over until it runs out of memory. This is not a memory issue, I have dedicated hosting and have set the memory as high as 512M.

I have traced the menu rebuild process by printing to my php error log:

[Wed Nov 28 13:50:11 2012] [error] [client 172.21.40.31] Function: menu_get_item
[Wed Nov 28 13:50:11 2012] [error] [client 172.21.40.31] Function: menu_rebuild
[Wed Nov 28 13:50:11 2012] [error] [client 172.21.40.31] ---menu_rebuild- Transaction
[Wed Nov 28 13:50:11 2012] [error] [client 172.21.40.31] Function: menu_router_build
[Wed Nov 28 13:50:11 2012] [error] [client 172.21.40.31] Function: _menu_router_build
[Wed Nov 28 13:50:12 2012] [error] [client 172.21.40.31] Function: menu_get_item
[Wed Nov 28 13:50:12 2012] [error] [client 172.21.40.31] Function: menu_rebuild
[Wed Nov 28 13:50:12 2012] [error] [client 172.21.40.31] ---menu_rebuild- Transaction
[Wed Nov 28 13:50:12 2012] [error] [client 172.21.40.31] Function: menu_router_build